112 entries under firm topic. ×
| indurated(adjective, stiff, rigid) | |
| inextricable(true, fixed, constant, steadfast) | |
| inflexible(adjective, strong, hard, solid) | |
| levelheaded(adjective, solid, stable, fixed) | |
| liege(adjective, solid, stable, fixed) | |
| never-failing(adjective, solid, substantial, stable) | |
| packed(adjective, stiff, rigid) | |
| patterned(adjective, solid, substantial, stable) | |
| regular(adjective, solid, substantial, stable) | |
| reserved(adjective, solid, stable, fixed) | |
| rocklike(adjective, stiff, rigid) | |
| sedate(adjective, solid, stable, fixed) | |
| self-possessed(adjective, solid, stable, fixed) | |
| sensible(adjective, solid, stable, fixed) | |
| serene(adjective, solid, stable, fixed) | |
| serious-minded(adjective, solid, stable, fixed) | |
| single-minded(adjective, solid, stable, fixed) | |
| sober(adjective, solid, stable, fixed) | |
| staid(adjective, solid, stable, fixed) | |
| steady-going(adjective, solid, substantial, stable) |
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| APA | Smart Define. (2015). durable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/durable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, durable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>. |
| MLA | Smart Define. "durable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms> |